Type Alias ClauseKind

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pub type ClauseKind<'tcx> = ClauseKind<TyCtxt<'tcx>>;

Aliased Type§

enum ClauseKind<'tcx> {
    Trait(TraitPredicate<TyCtxt<'tcx>>),
    RegionOutlives(OutlivesPredicate<TyCtxt<'tcx>, Region<'tcx>>),
    TypeOutlives(OutlivesPredicate<TyCtxt<'tcx>, Ty<'tcx>>),
    Projection(ProjectionPredicate<TyCtxt<'tcx>>),
    ConstArgHasType(Const<'tcx>, Ty<'tcx>),
    WellFormed(GenericArg<'tcx>),
    ConstEvaluatable(Const<'tcx>),
    HostEffect(HostEffectPredicate<TyCtxt<'tcx>>),
}

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Trait(TraitPredicate<TyCtxt<'tcx>>)

Corresponds to where Foo: Bar<A, B, C>. Foo here would be the Self type of the trait reference and A, B, and C would be the type parameters.

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RegionOutlives(OutlivesPredicate<TyCtxt<'tcx>, Region<'tcx>>)

where 'a: 'r

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TypeOutlives(OutlivesPredicate<TyCtxt<'tcx>, Ty<'tcx>>)

where T: 'r

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Projection(ProjectionPredicate<TyCtxt<'tcx>>)

where <T as TraitRef>::Name == X, approximately. See the ProjectionPredicate struct for details.

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ConstArgHasType(Const<'tcx>, Ty<'tcx>)

Ensures that a const generic argument to a parameter const N: u8 is of type u8.

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WellFormed(GenericArg<'tcx>)

No syntax: T well-formed.

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ConstEvaluatable(Const<'tcx>)

Constant initializer must evaluate successfully.

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HostEffect(HostEffectPredicate<TyCtxt<'tcx>>)

Enforces the constness of the predicate we’re calling. Like a projection goal from a where clause, it’s always going to be paired with a corresponding trait clause; this just enforces the constness of that implementation.

Trait Implementations§

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impl<'tcx> EraseType for ClauseKind<'tcx>

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type Result = [u8; 32]

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impl ParameterizedOverTcx for ClauseKind<'static>

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type Value<'tcx> = ClauseKind<TyCtxt<'tcx>>

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impl<'tcx, P: PrettyPrinter<'tcx>> Print<'tcx, P> for ClauseKind<'tcx>

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impl<I> Clone for ClauseKind<I>
where I: Interner,

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fn clone(&self) -> ClauseKind<I>

Returns a copy of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<I> Debug for ClauseKind<I>
where I: Interner,

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl<I, __D> Decodable<__D> for ClauseKind<I>
where I: Interner, __D: TyDecoder<I = I>, TraitPredicate<I>: Decodable<__D>, OutlivesPredicate<I, <I as Interner>::Region>: Decodable<__D>, OutlivesPredicate<I, <I as Interner>::Ty>: Decodable<__D>, ProjectionPredicate<I>: Decodable<__D>, <I as Interner>::Const: Decodable<__D>, <I as Interner>::Ty: Decodable<__D>, <I as Interner>::GenericArg: Decodable<__D>, HostEffectPredicate<I>: Decodable<__D>,

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fn decode(__decoder: &mut __D) -> ClauseKind<I>

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impl<I, __E> Encodable<__E> for ClauseKind<I>
where I: Interner, __E: TyEncoder<I = I>, TraitPredicate<I>: Encodable<__E>, OutlivesPredicate<I, <I as Interner>::Region>: Encodable<__E>, OutlivesPredicate<I, <I as Interner>::Ty>: Encodable<__E>, ProjectionPredicate<I>: Encodable<__E>, <I as Interner>::Const: Encodable<__E>, <I as Interner>::Ty: Encodable<__E>, <I as Interner>::GenericArg: Encodable<__E>, HostEffectPredicate<I>: Encodable<__E>,

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fn encode(&self, __encoder: &mut __E)

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impl<I> Hash for ClauseKind<I>
where I: Interner,

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fn hash<__H>(&self, __state: &mut __H)
where __H: Hasher,

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<I, __CTX> HashStable<__CTX> for ClauseKind<I>
where I: Interner, TraitPredicate<I>: HashStable<__CTX>, OutlivesPredicate<I, <I as Interner>::Region>: HashStable<__CTX>, OutlivesPredicate<I, <I as Interner>::Ty>: HashStable<__CTX>, ProjectionPredicate<I>: HashStable<__CTX>, <I as Interner>::Const: HashStable<__CTX>, <I as Interner>::Ty: HashStable<__CTX>, <I as Interner>::GenericArg: HashStable<__CTX>, HostEffectPredicate<I>: HashStable<__CTX>,

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fn hash_stable( &self, __hcx: &mut __CTX, __hasher: &mut StableHasher<SipHasher128>, )

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impl<I> PartialEq for ClauseKind<I>
where I: Interner,

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fn eq(&self, __other: &ClauseKind<I>) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<I> TypeFoldable<I> for ClauseKind<I>

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fn try_fold_with<__F>( self, __folder: &mut __F, ) -> Result<ClauseKind<I>, <__F as FallibleTypeFolder<I>>::Error>
where __F: FallibleTypeFolder<I>,

The entry point for folding. To fold a value t with a folder f call: t.try_fold_with(f). Read more
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fn fold_with<F>(self, folder: &mut F) -> Self
where F: TypeFolder<I>,

A convenient alternative to try_fold_with for use with infallible folders. Do not override this method, to ensure coherence with try_fold_with.
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impl<I> TypeVisitable<I> for ClauseKind<I>

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fn visit_with<__V>( &self, __visitor: &mut __V, ) -> <__V as TypeVisitor<I>>::Result
where __V: TypeVisitor<I>,

The entry point for visiting. To visit a value t with a visitor v call: t.visit_with(v). Read more
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impl<I> Copy for ClauseKind<I>
where I: Interner,

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impl<I> Eq for ClauseKind<I>
where I: Interner,

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 32 bytes

Size for each variant:

  • Trait: 24 bytes
  • RegionOutlives: 16 bytes
  • TypeOutlives: 16 bytes
  • Projection: 24 bytes
  • ConstArgHasType: 16 bytes
  • WellFormed: 8 bytes
  • ConstEvaluatable: 8 bytes
  • HostEffect: 24 bytes